To build your PC with your newly purchased component just follow my step-by-step process and at the end you can see my practice in the video.
In order to properly build your PC, you need to start by placing the CPU on the mainboard. Make sure that the CPU is placed fully correctly on the socket of the CPU in the mainboard.
After that you can now build the fan of the CPU. Just put the cream ( not too much to overlap ) of the CPU that comes with the fan.
Now time to place the RAM and M2 SSD on the main board. In this case, it depends on the amount of RAM you have. If you have 2 RAM with the same model, you need to follow the instructions in the photo below.
For more information see the video belew.